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Manipal Engineering Manipal Engineering Solved Paper-2011

  • question_answer
    Water is falling on the blades of a turbine at a rate of 100 kg/s. If the height of the fall is 100 m, the power transferred to the turbine will be approximately

    A)  100 kW                               

    B)  10 kW

    C)  1 kW                    

    D)         100 W

    Correct Answer: A

    Solution :

    \[Power=\frac{work}{time}\]                 \[=\frac{mgh}{t}=\left( \frac{m}{t} \right)gh\] Given,\[\frac{m}{t}=100\,\,kg/s,\,\,h=100\,\,m,\,\,g=10\,\,m/{{s}^{2}}\] \[\therefore \]  \[Power=100\times 10\times 100\]                 \[=100\,\,kW\]


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